Preparation method of photocatalytic film with energy storage function

A photocatalytic film and energy storage technology, applied in the field of photocatalysis, can solve the problems of easy peeling, cracking strength and singleness of the film, and achieve the effects of benefiting photocatalytic performance, improving bonding strength and strong controllability

Inactive Publication Date: 2012-09-19
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing a photocatalytic film with energy storage function, so as to solve the disadvantages of relatively simple existing methods and the prepared film is prone to peeling, cracking and low strength.

Method used

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  • Preparation method of photocatalytic film with energy storage function
  • Preparation method of photocatalytic film with energy storage function
  • Preparation method of photocatalytic film with energy storage function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of titanium dioxide nanotube array film

[0025] Mix deionized water and ethylene glycol at a mass ratio of 1:4, use the mixed solvent to prepare an ammonium fluoride solution with a concentration of 0.25%, add the ammonium fluoride solution into the reaction vessel as an electrolyte, and titanium sheets (purity 99 %) as the anode, platinum sheet (99.99% purity) as the cathode, the distance between the anode and the cathode is 2cm, anodized for 4 hours at a temperature of 40°C and a voltage of 40V, and a titanium dioxide nanotube array film is formed on the surface of the titanium sheet. After the reaction, the titanium sheet with the titanium dioxide nanotube array thin film on the surface was ultrasonically cleaned in acetone, dried, and annealed at 460° C. for 4 hours under the protection of nitrogen.

[0026] (2) Electrodeposition of cobalt

[0027] The annealed titanium sheet with a titanium dioxide nanotube array film on its surface was used as th...

Embodiment 2

[0033] Prepare titanium dioxide nanotube array thin film by the step of embodiment 1 (1), the sample after annealing is made cathode, and platinum plate is made anode, and the distance between cathode and anode is 2cm, in the 5mmol / L cobalt nitrate containing 0.04% isopropanolamine In an aqueous solution, direct current deposition at room temperature for 30 seconds at a current of 5 mA, wash the sample with deionized water and ethanol in sequence, and dry to obtain the product.

Embodiment 3

[0035] Prepare titanium dioxide nanotube array thin film by the step of embodiment 1 (1), the sample after annealing is made cathode, and platinum plate is made anode, and the distance between cathode and anode is 2cm, in the 5mmol / L chlorination that contains 0.1% isopropanolamine Cobalt aqueous solution, direct current deposition at room temperature for 30 seconds under 5mA current, washing the sample with deionized water and ethanol in sequence, and drying to obtain the product.

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Abstract

The invention relates to a preparation method of a photocatalytic film with an energy storage function. The method includes the following steps: mixing deionized water and glycol at mass ratio of 1:4; preparing ammonium fluoride solution with concentration of 0.25% through the mixed solvent of water and glycol; adding the ammonium fluoride solution into a reaction container, taking a titanium sheet as the anode and a platinum sheet as the cathode, oxidizing the anode for four hours under the voltage of 40V to form a titanium dioxide nanotube array film on the surface of the titanium sheet; after the reaction is finished, washing, drying and annealing, then taking the sample as the cathode and the platinum sheet as the anode, putting the cathode and the anode into a 5mmol/L cobalt saline solution which contains 0.04-0.1% interfacial agent for DC(Direct Current) deposition, wherein the distance between the cathode and the anode is 2cm; and finally washing and drying. In such a way, the photocatalytic film with the energy storage function can be obtained. The titanium dioxide nanotube array film prepared through the method has great bonding strength with a titanium matrix and the film has bigger specific surface area, which is good for the improvement and enhancement of the photocatalytic performance.

Description

Technical field: [0001] The invention belongs to the field of photocatalysis, in particular to a method for preparing a photocatalytic thin film with energy storage function. Background technique: [0002] Photocatalyst is a substance that does not change itself under the irradiation of light, but can promote chemical reactions. It is widely used in the degradation of pollutants, air purification, self-cleaning, antibacterial, deodorization, etc. [0003] The catalysis of photocatalysts can only be realized under the excitation of light. In order to improve the performance of photocatalysts and prolong their action time, people have developed photocatalytic materials with energy storage functions. This energy-storage photocatalyst not only has a catalytic effect under light conditions, but also has a storage function for the photoelectrons (reduction energy) generated by the light. [0004] The preparation method of photocatalytic thin film with energy storage function has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26B01J21/06B01J23/75B01J35/02B01J37/00
Inventor 赵建玲王西新徐幸如刘德臣范巧温
Owner HEBEI UNIV OF TECH
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